Used primarily as a building block in organic synthesis, especially in the development of pharmaceuticals and bioactive molecules. Its unique spirocyclic structure containing a sulfur atom enhances stability and influences molecular conformation, making it valuable in drug design for exploring new chemical space. It is also employed in the synthesis of specialty heterocyclic compounds where ring strain and polarity play a role in reactivity. Due to its ketone functionality, it participates in nucleophilic addition and condensation reactions, enabling further functionalization for use in medicinal chemistry research.